mep sequence in building

just share your ideas,need to complete the following:

electrical
wall:
after blockwork chasing/marking,we can start for conduiting and g.i. box and db box then close by plaster.. then we install wiring for light and power..then install/terminate db after light fittings

ceiling:
after blockwork, install hangers then g.i. tray then high level wiring install, then access for ceiling works

a/c

after blockwork, we can start for 1st fix a/c hanger then start ducting / insulation and fcu and chilled pipes installation in parallel, then connect line bet fcu and duct,then access for ceiling works

after fixing of pipes, testing/commission